The history of civilisation is a history of public goods. The more complex the civilisation the greater the number of public goods that needed to be provided. Ours is far and away the most complex civilisation humanity has ever developed. So its need for public goods – and goods with public goods aspects, such as education and health – is extraordinarily large. The institutions that have historically provided public goods are states. But it is unclear whether today’s states can – or will be allowed to – provide the goods we now demand....

The industrial revolution expanded the activities of the state in innumerable ways. This was fundamentally because of the needs of the economy itself. Markets could not, on their own, provide an educated population or large-scale infrastructure, defend intellectual property, protect the environment and public health, and so on. Governments felt obliged – or delighted – to intervene, as suppliers and regulators, or subsidisers and taxers. In addition to this, the arrival of democracy increased the demand for redistribution, partly in response to the insecurity of workers. For all these reasons, the modern state, vastly more potent than any that existed before, has exploded in the range and scale of its activities. Will this be reversed? No. Does it work well? That is a good question.